Elevator car door apparatus
AssigneeMitsubishi Electric Corporation
InventorMasaya Kitazawa
Life of this patent
Estimating the term…
Abstract
In an elevator car door apparatus, a locking member is disposed on a blade-carrying car door, and is displaceable between an unlocked position and a locked position interdependently with movement of a doorstop-side blade. A guiding portion is disposed on the locking member. A guiding cam is disposed outside the blade-carrying car door. When the car is positioned outside an appropriate floor alignment position, the blade-carrying car door moves in an opening direction, the guiding portion moves along the guiding cam, the locking member displaces to the locked position, and the doorstop-side blade also displaces to a locking accommodating position, the locking member catches in a fixed latch, and movement of the blade-carrying car door in the opening direction is prevented.
Claims18
An elevator car door apparatus comprising:
- a blade-carrying car door that opens and closes a car doorway by sliding horizontally;
- a doorstop-side blade that is disposed on the blade-carrying car door, and that is displaceable horizontally relative to the blade-carrying car door between an unlocking accommodating position, and a locking accommodating position that is closer to a door pocket side than the unlocking accommodating position;
- a locking member that is disposed on the blade-carrying car door, and that is displaceable between an unlocked position and a locked position interdependently with movement of the doorstop-side blade;
- a fixed latch that is disposed on an external portion of the blade-carrying car door, and that stops movement of the blade-carrying car door in an opening direction by the locking member catching thereon when the locking member is in the locked position;
- a guiding cam that is disposed on an external portion of the blade-carrying car door;
- and
- a guiding portion that is disposed on the locking member, wherein:
- the doorstop-side blade is constantly subjected to a force toward the locking accommodating position;
- the locking member is held in the unlocked position, and the doorstop-side blade is also held in the unlocking accommodating position, by the guiding portion contacting the guiding cam when the blade-carrying car door is in a fully closed state;
- if the blade-carrying car door moves in the opening direction when a car is positioned in an appropriate floor alignment position, the doorstop-side blade contacts an interlocking roller of an interlocking apparatus that is disposed on a landing door makes contact such that displacement of the doorstop-side blade to the locking accommodating position is prevented, and such that displacement of the locking member to the locked position is also prevented;
- and
- when the car is positioned outside the appropriate floor alignment position, the blade-carrying car door moves in the opening direction, the guiding portion moves along the guiding cam, the locking member displaces to the locked position, and the doorstop-side blade also displaces to the locking accommodating position, the locking member catches in the fixed latch, and movement of the blade-carrying car door in the opening direction is prevented.
Dependencies are inferred from the claim text.